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Purpose <p>To examine the test–retest reliability of a novel composite index integrating jump/hop performance and simple visual response time during neurocognitive single-leg anterior hop and single-leg countermovement jump (N-SCMJ) in 29 healthy college students who completed two identical sessions 14–21&#xa0;days apart.</p> Methods <p>We standardised performance and sign-reversed response time (RT; lamp illumination to toe-off) across sessions to compute Z-scores, which were transformed into T-scores. The primary composite was the equal-weighted mean of performance and sign-reversed RT T-scores; sensitivity analyses applied alternative weightings.</p> Results <p>Intraclass correlation coefficients ranged from 0.783 to 0.963; Bland–Altman analyses revealed a small, fixed bias for N-SCMJ jump height and N-SCMJ composite. The composite index demonstrated good test–retest reliability in healthy adults, supporting its use for integrated neuromuscular–cognitive performance assessment. These composites can track integrated reactive hop/jump performance over time while accounting for potential session-to-session variability in the N-SCMJ.</p> Conclusions <p>These findings support a simple, interpretable composite T-score for tracking integrated reactive motor output and visual response speed over time, whilst highlighting the need for familiarisation and careful recalibration when applying standardised composites to different populations, including post-ACL reconstruction.</p>

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Physical–cognitive performance integration with a composite index using hop distance, vertical jump, and response time

  • 期刊论文

  • 发表日期：

    2026年6月24日

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  • Shunsuke Ohji,
  • Jun-ya Aizawa

摘要

Purpose

To examine the test–retest reliability of a novel composite index integrating jump/hop performance and simple visual response time during neurocognitive single-leg anterior hop and single-leg countermovement jump (N-SCMJ) in 29 healthy college students who completed two identical sessions 14–21 days apart.

Methods

We standardised performance and sign-reversed response time (RT; lamp illumination to toe-off) across sessions to compute Z-scores, which were transformed into T-scores. The primary composite was the equal-weighted mean of performance and sign-reversed RT T-scores; sensitivity analyses applied alternative weightings.

Results

Intraclass correlation coefficients ranged from 0.783 to 0.963; Bland–Altman analyses revealed a small, fixed bias for N-SCMJ jump height and N-SCMJ composite. The composite index demonstrated good test–retest reliability in healthy adults, supporting its use for integrated neuromuscular–cognitive performance assessment. These composites can track integrated reactive hop/jump performance over time while accounting for potential session-to-session variability in the N-SCMJ.

Conclusions

These findings support a simple, interpretable composite T-score for tracking integrated reactive motor output and visual response speed over time, whilst highlighting the need for familiarisation and careful recalibration when applying standardised composites to different populations, including post-ACL reconstruction.